Cisco 2950 Hardware Installation Guide - Page 22

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Catalyst 2950 Switch Hardware Installation Guide

OL-6156-01

Chapter 1

Overview

Features

–

Catalyst 2950G-12-EI

—

12 10/100 Ethernet ports and 2 GBIC module slots

–


—


–

Catalyst 2950G-24-EI-DC

—

24 10/100 Ethernet ports and 2 GBIC module slots with

DC-input power

–


—


–

Catalyst 2950ST-8 LRE switch

—

8 LRE ports, 2 10/100/1000 Ethernet ports, and

2 small-form-factor pluggable (SFP) module slots. (Two of the four uplink ports are active at

one time.)

–

Catalyst 2950ST-24 LRE switch

—


2 SFP module slots. (Two of the four uplink ports are active at one time.)

–

Catalyst 2950ST-24 LRE 997 switch

—


2 SFP module slots with DC-input power. (Two of the four uplink ports are active at one time.)

Note

See the Catalyst 2950 LRE switch release notes for a list of supported SFP modules for the

Catalyst 2950 LRE switches.

–

Catalyst 2950SX-24 switch

—

24 10/100 Ethernet ports and 2 1000BASE-SX ports

–

Catalyst 2950T-24 switch

—

24 10/100 Ethernet ports and 2 10/100/1000 Ethernet ports

–

Catalyst 2950SX-48-SI switch

—

48 10/100 Ethernet ports and 2 1000BASE-SX ports

–

Catalyst 2950T-48-SI switch

—

48 10/100 Ethernet ports and 2 10/100/1000 Ethernet ports

–

On Catalyst 2950G-12-EI, 2950G-24-EI, 2950G-24-EI-DC, and 2950G-48-EI switches,

support for these GBIC modules:

1000BASE-SX GBIC

1000BASE-LX/LH GBIC

1000BASE-ZX GBIC

1000BASE-T GBIC (model WS-5483)

Coarse Wave Division Multiplexer (CWDM) fiber-optic GBIC

GigaStack GBIC

•

Configuration

–

For 10/100 ports, autonegotiates the speed and duplex settings

–

For 10/100/1000 ports on the Catalyst 2950T-24 switch, autonegotiates the speed and supports

only full-duplex mode

–

For 10/100/1000 ports on the Catalyst 2950T-48-SI and 2950 LRE switches, autonegotiates the

speed and duplex setting when operating at 10 or 100

Mbps. When the switch is running at 1000

Mbps, it supports only full-duplex mode.

–

For 100BASE-FX ports, supports only 100-Mbps and full-duplex settings

–

For 1000BASE-SX ports, supports only 1000-Mbps and full-duplex settings

–

Supports 8192 MAC addresses

–

Checks for errors on a received packet, determines the destination port, stores the packet in

shared memory, and then forwards the packet to the destination port

Section	Page
Catalyst 2950 Switch Hardware Installation Guide	1
Contents	3
Cisco Limited Lifetime Hardware Warranty Terms	7
Preface	9
Audience	9
Purpose	9
Conventions	9
Related Publications	15
Obtaining Documentation	17
Cisco.com	17
Documentation CD-ROM	17
Ordering Documentation	17
Documentation Feedback	18
Obtaining Technical Assistance	18
Cisco TAC Website	18
Opening a TAC Case	18
TAC Case Priority Definitions	19
Obtaining Additional Publications and Information	19
Overview	21
Setting up the Switch	21
Features	21
Front-Panel Description	23
10/100 Ports	27
10/100/1000 Ports	28
100BASE-FX and 1000BASE-SX Ports	29
LRE Port	29
GBIC Module Ports	30
SFP Module Slots	31
SFP Modules	31
LEDs	33
System LED	36
RPS LED	36
Port Mode and Port Status LEDs	36
Rear-Panel Description	41
Power Connectors	42
Internal Power Supply Connector	42
DC Power Connector	43
Cisco RPS Connector	43
Cisco RPS 300	43
Cisco RPS 675	43
Console Port	44
Management Options	44
Installation	47
Preparing for Installation	47
Warnings	47
Installation Guidelines	50
Verifying Package Contents	51
Verifying Switch Operation	52
Installing the Switch	53
Installing the Switch in a Rack	53
Attaching the Brackets to the Switch	54
Mounting the Switch in a Rack	62
Attaching the Optional Cable Guide	62
Installing the Switch on a Table, Shelf, or Desk	63
Installing the Switch on a Wall	63
Attaching the Brackets to the Switch	63
Attaching the RPS Connector Cover	64
Mounting the Switch to a Wall	64
Installing the Optional AC Ground Kit for Catalyst 2950 Switches	65
Installing the GBIC Modules	68
Installing and Removing SFP Modules	69
Installing SFP Modules into SFP Module Slots	69
Removing SFP Modules from SFP Module Slots	71
Connecting to 10/100 and 10/100/1000 Ports	73
Connecting to 100BASE-FX and 1000BASE-SX Ports	75
Connecting to an LRE Port	76
Connection Guidelines	76
Limitations and Restrictions with POTS Splitters	77
Required Cables	78
Connecting to a Patch Panel or POTS Splitter	78
Connecting to GBIC Module Ports	81
Connecting to 1000BASE-X GBIC Module Ports	81
Connecting to 1000BASE-T GBIC Module Ports	82
Connecting to GigaStack GBIC Module Ports	83
Connecting to SFP Modules	84
Connecting to Fiber-Optic SFP Modules	84
Connecting to 1000BASE-T SFP Modules	85
Where to Go Next	86
Troubleshooting	87
Understanding POST Results	87
Diagnosing Problems	87
Technical Specifications	91
Connectors and Cables	99
Connector Specifications	99
10/100 Ports	99
10/100/1000 Ports	100
Connecting to 10BASE-T and 100BASE-TX Devices	100
Connecting to 1000BASE-T Devices	101
LRE Port	101
100BASE-FX and 1000BASE-SX Ports	102
1000BASE-X GBIC Module Ports	102
1000BASE-T GBIC Module Ports	102
GigaStack GBIC Module Ports	102
SFP Module Ports	103
Console Port	103
Identifying a Crossover Cable	103
Cable and Adapter Specifications	104
Two Twisted-Pair Cable Pinouts	104
Four Twisted-Pair Cable Pinouts for 10/100 Ports	105
Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports	106
RJ-21 Cable Pinouts	106
Adapter Pinouts	108
Connecting to DC Power	111
Preparing for Installation	112
Grounding the Switch	112
Wiring the DC-Input Power Source	114
Configuring the Switch with the CLI-Based Setup Program	119
Accessing the CLI	119
Accessing the CLI Through Express Setup	119
Accessing the CLI Through the Console Port	120
Taking Out What You Need	121
Connecting to the Console Port	121
Starting the Terminal-Emulation Software	122
Connecting to a Power Source	123
Entering the Initial Configuration Information	123
IP Settings	123
Completing the Setup Program	124

Cisco 2950 Hardware Installation Guide - Page 22

Coarse Wave Division Multiplexer CWDM fiber-optic GBIC, 1000BASE-T GBIC model WS-5483 - 24 ei

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